section{
  height: 50vh;
  display: flex;
  flex-direction: column;
  background:  #22a4f0;
}
div.content{
  display: flex;
  justify-content: space-around;
  flex-wrap: wrap;
  height: 150px;
}

div.content > div{
  flex: 0 0 120px;
  text-align: center;
  background: beige;
  border-radius: 5px;
}
div.content > div:hover{
  align-self: stretch;
  flex: 0 0 160px;
}